Toshiba TLCS-900/L1 Series Manual page 258

6. Points of Note and Restrictions
(1) Notation
a. The notation for built-in I/O registers is as follows register symbol <Bit symbol>
e.g.) TA01RUN<TA0RUN> denotes bit TA0RUN of register TA01RUN.
b. Read-modify-write instructions
An instruction in which the CPU reads data from memory and writes the data to the
same memory location in one instruction.
Example 1:
Example 2:
• Examples of read-modify-write instructions on the TLCS-900
Exchange instruction
EX
Arithmetic operations
ADD
SUB
INC
Logic operations
AND
XOR
Bit manipulation operations
STCF
SET
TSET
Rotate and shift operations
RLC
RL
SLA
SLL
RLD
c. fc, fs, f , f
FPH
The clock frequency input on pins X1 and 2 is called f
DFMCR0<ACT1:0> is called fc.
The clock selected by SYSCR1<SYSCK> is called f
divided by 2 is called f
One cycle of f
SET 3, (TA01RUN) ... Set bit3 of TA01RUN.
INC 1, (100H) ... Increment the data at 100H.
(mem), R/# ADC
(mem), R/# SBC
#3, (mem) DEC
(mem), R/# OR
(mem), R/#
#3/A, (mem) RES
#3, (mem) CHG
#3, (mem)
(mem) RRC
(mem) RR
(mem) SRA
(mem) SRL
(mem) RRD
and one state
SYS
.
SYS
is referred to as one state.
SYS
91C824-256
(mem), R
(mem), R/#
(mem), R/#
#3, (mem)
(mem), R/#
#3, (mem)
#3, (mem)
(mem)
(mem)
(mem)
(mem)
(mem)
OSCH
. The clock frequency give by f
FPH
TMP91C824
. The clock selected by
FPH
2008-02-20